%0 Journal Article
%T Search for B+ -> l(+)nu(l) recoiling against B- -> D(0)l(-)(nu)over-barX
%A BABAR Collaboration (Aubert, B. et al
%A Azzolini, V.
%A Lopez-March, N.
%A Martinez-Vidal, F.
%A Milanes, D. A.
%A Oyanguren, A.
%J Physical Review D
%D 2010
%V 81
%N 5
%I Amer Physical Soc
%@ 1550-7998
%G English
%F BABARCollaborationAubert_etal2010
%O ISI:000276194200001
%O exported from refbase (https://references.ific.uv.es/refbase/show.php?record=470), last updated on Tue, 22 Mar 2011 14:29:23 +0000
%X We present a search for the decay B+ -> l(+)nu(l) (l = tau, mu, or e) in (458.9 +/- 5.1) x 10(6) B (B) over bar pairs recorded with the BABAR detector at the PEP-II B-factory. We search for these B decays in a sample of B+B- events where one B- meson is reconstructed as B- -> D(0)l(-)(nu) over barX. Using the method of Feldman and Cousins, we obtain B(B+ -> tau(+)nu(tau)) = (1.7 +/- 0.8 +/- 0.2) x 10(-4), which excludes zero at 2.3 sigma. We interpret the central value in the context of the standard model and find the B meson decay constant to be f(B)(2) = (62 +/- 31) x 10(3) MeV2. We find no evidence for B+ -> e(+)nu(e) and B+ -> mu(+)nu(mu) and set upper limits at the 90% C. L. B(B+ -> e(+)nu(e)) < 0.8 x 10(-5) and B(B+ -> mu(+)nu(mu)) < 1.1 x 10(-5).
%R 10.1103/PhysRevD.81.051101
%U http://fr.arxiv.org/abs/0912.2453
%U https://doi.org/10.1103/PhysRevD.81.051101
%P 051101-9pp